{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:16.291789", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2010-Mar-24_to_2010-Mar-26_103.5_31.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2010030000727}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "March 24 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 26 2010"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 51002.59709226774}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["China"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 31.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 103.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "103.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 102.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 104.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 32.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[101.85, 29.75], [101.75, 30.0], [101.97, 30.53], [102.32, 30.68], [102.47, 31.03], [102.82, 31.18], [102.85, 31.25], [102.75, 31.5], [102.85, 31.75], [102.75, 32.0], [102.97, 32.53], [103.5, 32.75], [104.03, 32.53], [104.25, 32.0], [104.15, 31.75], [104.25, 31.5], [104.15, 31.25], [104.25, 31.0], [104.13, 30.7], [104.53, 30.53], [104.75, 30.0], [104.65, 29.75], [104.75, 29.5], [104.65, 29.25], [104.68, 29.18], [105.03, 29.03], [105.25, 28.5], [105.03, 27.97], [104.5, 27.75], [104.25, 27.85], [104.0, 27.75], [103.75, 27.85], [103.5, 27.75], [102.97, 27.97], [102.82, 28.32], [102.75, 28.35], [102.5, 28.25], [101.97, 28.47], [101.75, 29.0], [101.85, 29.25], [101.75, 29.5], [101.85, 29.75]]]]}, "2010-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[101.85, 29.75], [101.75, 30.0], [101.97, 30.53], [102.32, 30.68], [102.47, 31.03], [102.82, 31.18], [102.85, 31.25], [102.75, 31.5], [102.85, 31.75], [102.75, 32.0], [102.97, 32.53], [103.5, 32.75], [104.03, 32.53], [104.25, 32.0], [104.15, 31.75], [104.25, 31.5], [104.15, 31.25], [104.25, 31.0], [104.13, 30.7], [104.53, 30.53], [104.75, 30.0], [104.65, 29.75], [104.75, 29.5], [104.65, 29.25], [104.68, 29.18], [105.03, 29.03], [105.25, 28.5], [105.03, 27.97], [104.5, 27.75], [104.25, 27.85], [104.0, 27.75], [103.75, 27.85], [103.5, 27.75], [102.97, 27.97], [102.82, 28.32], [102.75, 28.35], [102.5, 28.25], [101.97, 28.47], [101.75, 29.0], [101.85, 29.25], [101.75, 29.5], [101.85, 29.75]]]]}, "2010-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[101.85, 29.75], [101.75, 30.0], [101.97, 30.53], [102.32, 30.68], [102.47, 31.03], [102.82, 31.18], [102.85, 31.25], [102.75, 31.5], [102.85, 31.75], [102.75, 32.0], [102.97, 32.53], [103.5, 32.75], [104.03, 32.53], [104.25, 32.0], [104.15, 31.75], [104.25, 31.5], [104.15, 31.25], [104.25, 31.0], [104.13, 30.7], [104.53, 30.53], [104.75, 30.0], [104.65, 29.75], [104.75, 29.5], [104.65, 29.25], [104.68, 29.18], [105.03, 29.03], [105.25, 28.5], [105.03, 27.97], [104.5, 27.75], [104.25, 27.85], [104.0, 27.75], [103.75, 27.85], [103.5, 27.75], [102.97, 27.97], [102.82, 28.32], [102.75, 28.35], [102.5, 28.25], [101.97, 28.47], [101.75, 29.0], [101.85, 29.25], [101.75, 29.5], [101.85, 29.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.439292738473057}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.778968547461688}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [3.37857206436405, 2.452044854883354, 3.9732888378399025]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-4.480049092949287, -7.3150642998583635, -4.398874401525802]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.4997288526292865, -6.534286749988655, -5.3028900397671235]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.263730864802824, -8.439292738473057, -6.6959623151229835]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5550299906594796, -1.9641988635575935, -1.6203236292954561]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7455981583181766, -2.788770018236908, -1.924977816246818]}}